Printing-press.



C. DAUSIVIANN.

PRINTING PRESS.

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C DAUSIVIANN.

PRINTING PRESS.

APPLlcAloN FILED MAY 19. 19m.

Patented .11u16 18, 1918.

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5mm/nto@ WHA/momo C. DAUSIVIANN.

PRINTING PRESS.

APPLICATION rlLED MAY x9, 1916.

Pzrened June 18, 1918.

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PRINTING PRESS.

APPLlcATloN FILED www. :916.

`1%;WQ@ Patened Jun@ 18, 19M.

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C. DAUSIVIANN.

PRINTING PRESS.

APPLICATION FILED MAY I9, IsIa.

I; PAIAIIIAI June 18 1918.

5 SHEETS-SHEET 5.

Il HIIIIII'I 'I *UH-ARLES DAUSMANIF, F BROOKLYN, 'NEW YOIi'tPRINTING-PRESS.

Specification of Letters Patent.

Patented l une le, llltiln.

lltppllzzation tiled May 19, 1916. Serial No. 93,601.

To all whom t may concern.'

Be it known that l, CHARLES DAUSMANN, a citizen of the United States,residing at Brooklyn, in the county of Queens and State of New York,have invented new and useful improvements in Printing-Presses, of whichthe following is a specification. y

rllhis invention relates to printing presses of the rotary type, andparticularly to photogravure presses employing one or more printingcouples, each consisting of a printing roll having an etched intaglioprinting surface and a cooperating yielding impression roll,betweenwhich rolls the sheet or web of paper feeds to receive the `impressionin the printing action.

The primary object of the present invention is to provide a rotaryprinting press of the character described wherein couples are arrangedand combined in a novel manner for the printing of one side of the sheetby one printing vcouple and the printing of the reverse side of thesheet by another printing couple without twisting or distorting thepaper, or in any way causing undue strains or tensions upon the paperliable to interfere with perfect and complete lprinting actionssuccessively on opposite sides of the paper and while it is in acontinuous and constant courseof transit.

A further object of the invention is to provide a printing press emboding a novel o rganization ofparts wheregy any desired number of printingcouples may be arranged in proper relative order for the continuousfeeding of the web of paper for printing the same successively on one orboth sides thereof in any desired number of colors. i

A still further to provide novel and improved means for adjusting theelements of the press mechanism to feed the in the paper feed andprinting operations,

and to regulate the degree 4of impression j for. adjustin and tensionupon the moving we of paper as varying circumstances may require.

A still further object of the invention is to provide improved means forwiping or removing excess ink from the printing roll,

the ink font of each printing. couple wlth relation to the printingroll,

printing object of the invention is paper in a proper line, to i 4securean exact registratlon or calibrationI for adjusting the printing rollitself longitudinally and circumferentially as required, for regulatingthe pressure of the doctor blade upon the printing roll, for regulatingthe pressure of the impression roll and mov-V ing the same into and outof operative position, for adjusting the paper roll and controlling thespeed of rotation thereof, for guiding the moving web of paper to securethe stated printed action, and to drive the printing couples in accordwith each other and at a regulated rate`of speed.A

' With these and other objects in view the invention consists of thefeatures of construction, combination and arrangement of partshereinafter fully descril'oedv and claimed, reference being had to theaccompanying drawings in which:-

Figure l is a top plan view .of a rotary printing pressl constructed inaccordance with my invention.

Fig. 2 is a front side elevation of the same with parts appearing insection taken on the line 2 2 of Fig. 1.

lill

Fig. 3 is a view in elevation looking to'- A of the parts of roll andparts associated therewith.

Fig. 8 is a detail section on the line l8---8 of Fig. 7.

Fig. 9 is a vertical longitudinal section through one of the printingrolls and associated parts.

ln theaccompanying drawings, l have shown the application oftheinvention to a pair of printing devices or printing couples', 1 and 2,respectively, and which, for purposes of example, may be termed primaryand secondary printing devices or couples, which are designed torespectively print the opposite sides of the traveling web or sheet ofpaper or other material 3. lt 1s to be llllll understood, however, thatthese two printof the web in the same or did'erent colors,

or for printing opposite sides of the web in the same or di'erentcolors, and that in conjunction therewith other sets of printing couplesmay be employed for action upon the continuously traveling web to printone or both sides thereof in any desired number of colors.

As shown, each printing device or couple 1 vand 2 comprises a suitableframe structure 4, preferably consisting of suitable side plates orstandards properly connected and carried by a substantial base 5.Uprights 6 rise from the respective frame structures 4 and are connectedby longitudinal beams or girders 7 to form an overhead or superstructureconnecting the printing devices or couples and serving to supportcertain working parts and to serve as a guide frame for the properguidance of the traveling web 3, as hereinafter fully described.

Each printing couple, in addition to its frame structure 4, includes arotary printing roll 8 and a rotary impression roll 9. The printing roll8 consists of a drum or cylinder of copper or other suitable materialmounted upon a shaft or axis 10 and having an etched intaglio printingsurface. Each impression roll 9 consists of a drum or cylinder of rubberor other suitable resilient or elastic material mounted upon a shaft or'axis 11 and operating to yieldingly back the moving web of paper for asoft impression action, as is common in presses of the general characterdescribed.

The ink supplied to the printing roll 8 is contained in a font orreceptacle 12 in vwhich the lower portion of said roll revolves, andthis font is mounted upon a supporting bed or carriage 13 resting uponsliding blocks 14 arranged to travel in guideways 15 on the sides of theframe 4. The said box 14 rests upon adjusting cams 16 fixed to atransverse shaft 17 journaled on the frame and provided at one end witha hand wheel 18, whereby the cams may be simultaneously turned to raiseor lower the blocks and correspondingly raise or lower the font toadjust the same with relation to the printing roll as required. Theexcess ink supplied to the printing surface of the roll 8 is removedtherefrom by means of a horizontal transversely extending wiper ordoctor blade 19 carried by a support mounted on a rock shaft 20 havingat each end a pressure regulating varm or lever 21 projecting therefrom.This lever is provided with a series of notches or recesses 22 toreceive a stirrup or loop 23 upon one end of a chain, wire or otherflexible draft connection 24, the wires or draft connections of therespective arms 21 passing over grooved pulleys 25 on the overhead frameor superstructure and carrying at their free ends weights 26 which actto counterbalance the weight of the arms 21 and to pull upwardly thereonto regulate the pressure of the doctor blade on the printing roll, itbeing evident that by engaging the stir-- rups with different notches orrecesses in the arms the working pressure of the blade may be increasedor diminished at will.

The shaft 10 of the printing roll 8 is ournaled to rotate and also toslide longitudinally in bearing openings 27 in the sides of the frame 4,and one end of this shaft is annularly grooved, as indicated at 28, andreceives a thrust bracket 29 slidably engaging guide members 30 on theframe and formed with a nut 31 to travel upon a threaded adjusting shaft32 providedA with a hand wheel 33, whereby the thrust bracket may beadjusted in opposite directions to slide the shaft 10 longitudinally inits bearings, by means of which the cylinder 8 may be adjusted on a lineparallel with its axis transversely of the frame for properly disposingor registering the margins of the web 3 with the relation to the marginsor other portions of the printing surface. The other end of the shaft 10is reduced to loosely receive a spur gear 34 and a clutch disk or member35 which is also loose on the shaft but fixed to the gear by pins 36.This disk is provided with bearings 37 for a worm 38 which engages theteeth of a worm gear 39 suitably fixed or clamped to the shaft, as bymeans of a nut 40, the shaft of the worm 39 having an angular end 41 forthe reception of a crank handle or the like whereby said worm may beturned to turn the shaft 10 either forwardly or rearwardly Withoutturning the gear 34, so that the printinoroll 8 may be circumferentiallyadjusted or a registering action.

Onthe shaft 10 is also a pinion 42 meshing with the gear toothed portion43 of a cam gear member 44 mounted to revolve upon a stub shaft or axis45 arranged below and in rear of the shaft 10. This cam gear is providedwith a cam groove 46 to receive a friction roller 47 upon an arm 48 xedto the rod or shaft 20 of the wiper or doctor blade support. This shaft20 is fitted to slide longitudinally in bearings on the frame 4 and isadapted through the action of the grooved cam to slide or reciprocatethe doctor blade across the face of the roll 8, by means of which all ofthe exce ink on the face of the roll will be subjected to a longitudinalor lateral as well as a circumferential scraping action, thusinsuringthe removal of any of the particles of ink which may tend tocling to the surface of the printing cylinder. The outward movement ofthe lever or arm 48 may be limited by the stop pin or member 49,whereby, displacement of the cam roller will be prevented. It will beunderstood from the foregoing description that the doctor blade supportis mounted to turn upon the shaft 2() so that the pressure of the bladeon the printing roll ently of and without lill incarna will beautomaticall regulated independinterference from the blade reciprocatingmechanism.

rllhe shaft ll of the yielding compression roll 9 is journaled torevolve in bearing blocks' 49 which are tted to slide vertically inslots 50 formed in the frame sides, which slots are closed at theirupper ends by a cap 5l, provided with openings' to slidably re,L ceivethe lower reduced portions :of bearing blocks 52, the upper portions ofwhich normall ing locks 49 are swiveled to the lower ends of adjustingscrews 53 which pass through and work in threaded openings in the blocks52 and carry at their upper ends hand wheels 54, whereby the blocks 49may be vertically adjusted to independently adjust the impression roll 9with relation to vthe 4printing roll 8 to vary the printing pressure asrequired. yllhe blocks 52 carry pins or studs 55 engaging arcuate slots56 in impression roller lifting cam plates 57 carried by a transverseroclr shaft 58 journaled on the frame, said rock shaft being providedwith a hand lever 59 whereby it may be operated to raise or lower theblocks 52 together with the blocks 49 to bodily move the impression rollinto and out of engagement with the printing roll, to permit threadingof the paper between the rolls 'or cleaning or other work upon therespective rolls, as will be readily understood.

The gear 34 on the shaft l0 of the printing roll meshes with the spurteeth of a combined spur and beveled gear 60 carried by a stub shaft 6ljournaled upon the rear standard of the frame, whereby the said printingroll is driven through its clutch connection previously described, andthe gear 34 in turn meshes with a pinion 62 on the adjacent end of theshaft ll whereby .the impression roll 9 is driven. '.lhe beveled teethof the transmission gear 60 mesh with the beveled pinion 63 on theadjacent end of a longitudinally extending drive shaft 64 driven from anelectric or other suitable motor 65, the gearing connections between theshaft 64 and the transmission gears 69 of the printing couples l and 2being the same so as to drive said printing couples at the same rate ofspeed but in opposite directions for successive printing actions uponthe opposite sides of the web 3, as will be readily understood, exactsynchronism of action between the printing devices or couples beingthereby obtained.

ylllhe web 3 of the material to be printed, and which is commonly paper,is mounted in the form of a roll in the usualmanner upon a stockcarrying shaft or roll 66 arranged transversely of the the shafts of theprinting rolls at a point between the/printing couples.- The web 3 feedsfrom this shaft or roll, as indicated in 'structure back over the roll arest upon said cap pieces. The bearpress in parallelism with dottedlines in Fig. 2, first over a guide and tension roll a on thesuperstructure 7, thence downwardl between the printing and impressionro ls 8 and 9 of the printing couple 1, thence upwardly around a guideroll a at the adjacent end of the superstructure 7, thence along theunderside of said superand over similar guide and tension rolls a2 anda3 and over a guide roll at at the opposite end of the superstructure,then backwardly under said roll at and over the roll a3 and downwardlybetween the printing and impression rollers 8 and 9 of the printingcouple 2, then upwardly over a guide roller a5 at the adjacent end ofthe superstructure and backwardly toward the first-named end of theframe over a series of guide rolls a5, then upwardly again overa guideroll a6, and finally upwardly and forwardly toward the second-named endof the frame over a series of guide and tension rollers a7, from whichthe free end 3 of the web 3 may pass to foldin and cutting mechanismsorto other sets 0% printing actions according tothe number of diderentimpressions to be made or colors to be printed. lt will thus be seenthat the web will first pass through the printing couple and be printedupon one side thereof, and will then extend in the form horizontaltraveling stretch to the printing couple 2'at the opposite end of theframe, whereby its opposite side or face will be printed, thefirst-named face of the web being meanwhile dried in its course oftravel, the web then extending backward in the form of a second orintermediate stretch and finally forward again in the form of an upperstretch, whereby lit is conveyed through a back-and-forth course oftravel to secure a drying action, whereby the printed web is placed inproper condition to be folded and cut or to receive other printing timefor drying actions. 'llhe guiding a-nd tensioning rolls above describedare adapted for adjustment longitudinally of the press in any suitablemanner to properly position them for a desired guiding and tensioningaction on the moving web to maintain the web properly taut withoutimposing any undue amount of strain or tension thereon. llt will beobserved that the described mode of directing the web through its courseof travel between printing couples provides for the continuous anduninterrupted printing of the opposite sides of the web while such webis traveling at a regulated rate of speed in a smooth and even manner,and without the necessity of twisting or otherwise distorting or bendingor folding the sheet upon itself, thus overcoming objectionable strainsand tensions upon the paper and simplifying and reducing the number ofoperating parts. 'llhe web roll 66 is journaled in bearing itsimpressions without any material loss of lll9 members 67 having hingedcaps 68 adapted to be secured in closed position by fastenings 69, thuspermitting of the convenient removal of the roll shaft and theapplication of a new roll whenever required. @ne end of the shaft has agrooved collar 70 receiving a shifting fork 71 carrying a threadedsleeve or nut 7 2 arranged to travel upon an actuating screw shaft 7 3journaled upon the adjacent bearing standard and provided with a handwheel 74. By'the use of this adjusting means the roll may be movedendwise transversely of the press to laterally adjust the web paper fora proper printing or registering action. 0n the roll shaft is also acollar 7 5 serving as a-friction brake vsurface which is engaged by aU-shaped friction brake shoe 76 carried by a bar or plate 77 adjustablein guide members 7 8 on theadjacent bearing standard by means of a screwshaft 79, whereby the brake shoemay be adjusted to bear with greater orless friction on the brake ,collar to oppose a desired resistance to therotation of the drum and the feeding action of the paper therefrom.Hence the drum may be prevented from turning vtoo rapidly and the feedofthe paper therefrom controlled with accuracy and certainty, as will bereadily understood.

Fromthe foregoing description, taken in connection with the drawings,the construction and mode of operation of my improved photogravureprinting press will be readily understood and it will be. seen that theinvention provides a press of `this character which embodies thedesirable advantages sought and is adapted to operate in a 4thoroughlyreliable and ecient manner. While the Structural features disclosed. arepreferred, it will, of course, be understood that naearec ychanges inthe form, construction and arrangement of parts within the scope of theappended claims may be made without departing from the spirit orsacricing any of the advantages of the invention.

I claim 1. In a rinting apparatus of the character -descri ed, and incombination with a printing roll, and an impression roll, verticallyadjustable bearings for the shaft of the impression roll, a plurality ofvertically movable supports, a screw shaft in threaded engagement witheach support and engaging the adjacent adjustable bearing, a rock.shaft, studs upon the adjustable supports, slotted cams upon the rockshaft engaging said studs, whereb the supports and bearings may be raiseand lowered, and means carried by the rock shaft for adjusting the same.I

2. In a printing apparatus of the characn ter described, and incombination with a printing roll, and an impression roll, verticallyadjustable bearings for the shaft of the impression roll, a plurality ofvertically movable supports, a screw shaft in threaded engagement witheach support and engaging the adjacent adjustable bearing, a roclrshaft, studs upon the adjustable supports, slotted cams upon the rockshaft engaging said studs, whereby the supports and bearings ma beraised and lowered, and means carried y the rock shaft for adjusting thesame, a second impression roll mounts for vertical adjustment, aprinting roll coperating therewithI and means for guiding a web aroundsaid second impression roll in position for printing on the reverse sideof the web. y

.lln testimony whereof li aiin my signature.

CHARLES DAUSMANN.

